control.modred

control.modred(sys, ELIM, method='matchdc')

Model reduction of sys by eliminating the states in ELIM using a given method.

Parameters:

sys: StateSpace

Original system to reduce

ELIM: array

Vector of states to eliminate

method: string

Method of removing states in ELIM: either 'truncate' or 'matchdc'.

Returns:

rsys: StateSpace

A reduced order model

Raises:

ValueError

• if method is not either 'matchdc' or 'truncate'
• if eigenvalues of sys.A are not all in left half plane (sys must be stable)

Examples

>>> rsys = modred(sys, ELIM, method='truncate')